The restrooms are at City Park. Use the rock to help you beat Sir Rebral, then go into the sewer through either of the restrooms, to battle Ratman.
Both restrooms (boy and girl) lead to the sewer where Ratman is hiding.
The toilets in Poptropica are decorative, except that the restrooms on Super Power Island lead directly to the sewer where Ratman is hiding.
The sewer is under City Park, and you can get there by going through one of the public restrooms. Ratman is hiding there with his rats and stinging flies. (see related question)
You enter the sewer through the restrooms in the park (boys use the boys' room, girls use the girls' room).
Poptropicans seldom eat and never go to the bathroom. However, there are restrooms at City Park on Super Power island, one for boys and one for girls.
The island after Super Power Island was Spy Island.
Depending on the gender of your avatar, you can only enter one of the two restrooms in City Park. Both have access to the sewer, where Ratman is hiding.
You can beat the 5 non-flying villains in any order. If you are working left to right, the next is Ratman in the sewer under the restrooms.
No, there is no "super strength" on super power island glad to help :D
The subway is Downtown on Super Power Island.
There are no cheats in super power Island.
Go as far as you can to your right in Super Power Island.